def get_tags(self, rid):
select = ("?tag")
where = GraphPattern([
(URIRef(rid), NAO['hasTag'], "?tag"),
])
sparqlGrph = SPARQLGraph(self.graph)
tags = Query.query(sparqlGrph, select, where, initialBindings=None)
return tags
def get_property(self, rid, prop, graph=None):
if not graph:
select = ("?object")
where = GraphPattern([
(URIRef(rid), URIRef(prop), "?object"),
])
sparqlGrph = SPARQLGraph(self.graph)
obj = Query.query(sparqlGrph, select, where, initialBindings=None)
else:
select = ("?object")
where = GraphPattern([
(URIRef(rid), URIRef(prop), "?object"),
])
sparqlGrph = SPARQLGraph(graph)
obj = Query.query(sparqlGrph, select, where, initialBindings=None)
try:
return obj
except Exception:
return []
def resource_is_collection(self, rid):
select = ("?res")
where = GraphPattern([
(URIRef(rid), RDF.type, PIMO['Collection']),
(URIRef(rid), NIE['hasLogicalPart'], "?res"),
])
sparqlGrph = SPARQLGraph(self.graph)
resources = Query.query(sparqlGrph, select, where, initialBindings=None)
return list(resources)
def get_url_from_resource(self, rid):
select = ("?object")
where = GraphPattern([
(URIRef(rid), RDF['type'], "?object")
])
sparqlGrph = SPARQLGraph(self.graph)
res = Query.query(sparqlGrph, select, where, initialBindings=None)
try:
return str(res[0])
except Exception:
return None
def collections_linked_to_resource(self, rid):
select = ("?col")
where = GraphPattern([
("?col", NIE['hasLogicalPart'], URIRef(rid))
])
sparqlGrph = SPARQLGraph(self.graph)
res = Query.query(sparqlGrph, select, where, initialBindings=None)
try:
return res
except Exception:
return None
def get_property_list(self, rid, prop):
select = ("?object")
where = GraphPattern([
(URIRef(rid), URIRef(prop), "?object"),
])
sparqlGrph = SPARQLGraph(self.graph)
obj = Query.query(sparqlGrph, select, where, initialBindings=None)
try:
return obj
except Exception, error:
return error
def get_resources_by_extension(self, ext=""):
select = ("?id", "?type", "?title")
where = GraphPattern([
("?id", RDF.type, "?type"),
("?id", NIE['title'], "?title"),
("?id", NFO['mimetype'], "?type"),
("?id", NFO['extension'], Literal(ext)),
("?id", NFO['scheme'], Literal('file'))
])
sparqlGrph = SPARQLGraph(self.graph)
resources = Query.query(sparqlGrph, select, where, initialBindings=None)
return resources
def get_resources_by_property_value(self, predicate, value):
ns, qname = predicate.split(':')
#~ print ns, qname
prop = URIRef(NSBINDINGS[ns][qname])
if ns == 'rdf':
value = URIRef(value)
else:
value = Literal(value)
select = ("?id")
where = GraphPattern([
("?id", prop, value)
])
sparqlGrph = SPARQLGraph(self.graph)
resources = Query.query(sparqlGrph, select, where, initialBindings=None)
return resources